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Forum: Psychology Statistics

Psychological statistics, quantitative psychology. Statistics in social sciences. Experimental design, data analysis.

  1. Arrow Sticky Thread Sticky: Please Read This Before Posting

    Please provide us with some basic information before we can give useful advice: 1. purpose of the study / research question / hypotheses, if...

    Started by quark‎, 11-10-2005 12:21 AM
    • Replies: 0
    • Views: 21,242
    11-10-2005, 12:21 AM Go to last post
  1. Help responding to a journal reviewer on reliability of scale

    Hey all, My team has been working on a paper that looks at the psychometric properties of an 8-item scale. This scale has items that we pulled...

    Started by jdark7‎, 01-21-2017 02:59 PM
    • Replies: 2
    • Views: 110
    Yesterday, 10:50 AM Go to last post
  2. Repeated measures analysis with ordinal data

    Hello, I have data on subjects' ratings of 5 potential side effects (rated as: none, mild, moderate, considerable, strong) following three...

    Started by Siobh‎, 01-14-2017 12:01 PM
    intervention, likert-type scale, repeated measures, within-subjects
    • Replies: 1
    • Views: 207
    01-19-2017, 08:35 AM Go to last post
  3. Construction und reliability of scales

    Hello, I'm checking a moderated mediation with two mediators (altruism & egoism). I've constructed two scales (altruismus with 8 items and egoism...

    Started by yologer‎, 08-07-2016 07:06 AM
    • Replies: 1
    • Views: 349
    01-18-2017, 02:51 AM Go to last post
  4. Composite reliability vs Cronbach's alpha

    Hello Wondering if someone could clarify I'm developing a new measure with 10 constructs. Each construct has between 4 - 6 items. I've...

    Started by anon2000‎, 09-09-2014 04:02 AM
    2 Pages
    1 2
    composite reliability, cronbach's alpha, questionnaire development, reliability
    • Replies: 22
    • Views: 19,664
    01-18-2017, 02:27 AM Go to last post
  5. Repeated Measures Anova question

    Thanks so much for taking a minute to read this! I am planning a dissertation and IF could get some feedback as to if I am on the right track,...

    Started by sr1226‎, 01-14-2017 11:02 AM
    anova, nominal data analysis, repeated measures anova, within subjects
    • Replies: 1
    • Views: 160
    01-16-2017, 12:36 PM Go to last post
  6. Exploratory factor analysis with forced number of factors?

    Dear colleagues, SPSS has an option for exploratory factor analysis where you can choose the number of factors before performing the analysis. In...

    Started by Anthony_1000‎, 01-11-2017 03:02 AM
    • Replies: 3
    • Views: 190
    01-13-2017, 12:32 PM Go to last post
  7. Compare differences between exp. and contr. of two groups

    Hi! I already used lots of search engines without finding an answer to my problem. I am testing two methods for manipulating religious belief....

    Started by rothmann1510‎, 01-10-2017 08:20 AM
    anova, interaction, interaction effects, two factor anova, two factors
    • Replies: 5
    • Views: 239
    01-12-2017, 03:45 AM Go to last post
  8. [SPSS-ANOVA] Should I use a mixed ANOVA design?

    Good evening I am writing to inquire how I should tackle the data for my dissertation research paper. I have two main problems that I will point...

    Started by AnaC‎, 01-08-2017 02:34 PM
    anova, theory of mind
    • Replies: 1
    • Views: 164
    01-09-2017, 03:41 AM Go to last post
  9. Interactions in count data

    Hi all, I've run a multi-tasking behavioural paradigm with volunteers grouped according to 2 characteristics 1) Age (young, mid) 2) Risk (high,...

    Started by Lancaster‎, 01-05-2017 05:35 AM
    • Replies: 0
    • Views: 161
    01-05-2017, 05:35 AM Go to last post
  10. Statistical analysis

    Hi all. I am doing an experiment that looking at relationships between mental imagery and mental disorders, mental disorders and self-regulation...

    Started by Armaghgeddon‎, 01-04-2017 11:40 AM
    • Replies: 2
    • Views: 197
    01-04-2017, 02:10 PM Go to last post
  11. Exploratory factor analysis on grades

    Hi! I'm doing an analysis on a set of 90 test results in 7 different tasks (90 students were given a set of 7 tasks). The results were not given...

    Started by Danrob‎, 01-02-2017 03:28 AM
    • Replies: 0
    • Views: 187
    01-02-2017, 03:28 AM Go to last post
  12. Second language acquisition data analysis

    Hi there, I am writing a research paper about second language acquisition and I would like to confirm my data analysis approach since I am not an...

    Started by bgarcia‎, 01-01-2017 08:33 AM
    • Replies: 0
    • Views: 167
    01-01-2017, 08:33 AM Go to last post
  13. Factor analysis on dichotomously scored items

    Hi have a set of 30 dichotomously scored items (scored 0 and 1) and want to do exploratory factor analysis on them. I have heard that performing EFA...

    Started by Anthony_1000‎, 12-29-2016 11:14 AM
    • Replies: 4
    • Views: 233
    12-31-2016, 01:58 PM Go to last post
  14. Calculating and Reporting Effect Size for Fisher's Exact Test?

    Hi everyone, I am writing a paper for publication. This is my first time doing a survey study, and also my first time working with categorical...

    Started by nporot‎, 12-28-2016 01:42 PM
    effect size, fisher's exact test, odds ratios, phi
    • Replies: 2
    • Views: 242
    12-30-2016, 11:35 AM Go to last post
  15. Does this study design look okay? Thanks :)

    I want to look at: If a school-based CBT intervention has an impact on young people's levels of anxiety and/or depression. I have questionnaires...

    Started by cmms‎, 12-28-2016 06:15 PM
    • Replies: 3
    • Views: 240
    12-29-2016, 06:04 PM Go to last post
  16. Nested within-subjects repeated measures stats?

    Hi people, I am having some confusion over how to carry out the stats for my experiment. In the experiment, there is two condition of teaching...

    Started by sgjustino‎, 12-19-2016 09:41 AM
    linear mixed model, nested, repeated measure, within subject
    • Replies: 2
    • Views: 374
    12-26-2016, 10:13 AM Go to last post
  17. Sample size

    Dear colleagues, I have a question that has become a bone of contention among my colleagues. Iíd be very grateful if you commented. What are...

    Started by Anthony_1000‎, 12-26-2016 09:28 AM
    • Replies: 0
    • Views: 174
    12-26-2016, 09:28 AM Go to last post
  18. Choosing the right statistical procedure - GLM repeated measure?

    Hello, I would appreciate any help to determine the right statistical method to analyze the next research question. The research population is...

    Started by Netti‎, 12-23-2016 04:11 PM
    glm repeated measure
    • Replies: 2
    • Views: 271
    12-24-2016, 09:26 PM Go to last post
  19. Query about study design

    Dear All, I am currently working on designing a research project for my postgraduate psychology qualification and I am not quite sure if I am on the...

    Started by zammitr‎, 12-23-2016 07:32 AM
    • Replies: 0
    • Views: 176
    12-23-2016, 07:32 AM Go to last post
  20. Which method shall I use?

    Hello, I am working on my first paper and I feel quite lost with the statistical method. Hope you can help me! I am comparing two samples from...

    Started by AJLRB‎, 12-08-2016 03:43 AM
    contingecy table
    • Replies: 4
    • Views: 574
    12-12-2016, 10:04 AM Go to last post
  21. Question Which ANOVA?

    Hi there :) I am struggling to determine which would be the most appropriate ANOVA analysis to use for some work I am doing. I have 3...

    Started by roseberry‎, 12-10-2016 07:39 AM
    anova, contrasts, independent groups, one way anova, spss anova
    • Replies: 1
    • Views: 331
    12-10-2016, 06:00 PM Go to last post
  22. Dissertation Trouble Using Correlations

    Hello. I am having a problem with my dissertation and I was wondering if anyone is kind enough to help me out. I am running a within-subjects...

    Started by mulhaq‎, 12-08-2016 05:39 AM
    correlations, linear effects, normal distributions, psychology experiment, reliability
    • Replies: 1
    • Views: 203
    12-08-2016, 07:21 AM Go to last post
  23. Correlation & Regression

    I have used regression to explain a dependent variable with a number of independent variables. The finding is that the variables with highest betaís...

    Started by Anthony_1000‎, 12-03-2016 03:29 AM
    • Replies: 5
    • Views: 394
    12-07-2016, 03:53 AM Go to last post
  24. Nonparametric equivalent to a factorial ANOVA?

    Hi, Does anyone know of a nonparametric equivalent to a factorial ANOVA? I can't run a parametric test because I have violations of normality of...

    Started by coffee123‎, 09-21-2016 12:03 AM
    • Replies: 12
    • Views: 903
    12-07-2016, 03:38 AM Go to last post
  25. Smile moderated mediation

    Hi everyone, I am currently analysing a moderated mediation model. The long and short of it is that the analyses showed that the overall moderated...

    Started by timneill‎, 03-26-2014 11:46 PM
    • Replies: 10
    • Views: 3,646
    12-07-2016, 03:29 AM Go to last post
  26. Hypothesis Testing and Pearson's Homework Help PLS

    I have 2 questions I need help with: 1.You own the company that makes the cheap store brand wine for Walmart (Chateau Trailerparc). You think most...

    Started by portcity‎, 12-04-2016 02:42 PM
    • Replies: 0
    • Views: 205
    12-04-2016, 02:42 PM Go to last post
  27. Outliers in categorical data?

    Hello! I am working on a pre-analysis plan and have to specify what I am going to do with outliers. I have two categorical variables (5 levels and...

    Started by cynnetje‎, 12-02-2016 05:45 PM
    boxplot, categorical, chi-square, outlier
    • Replies: 2
    • Views: 189
    12-02-2016, 06:41 PM Go to last post
  28. How to include hanging control in ANOVA analysis on SPSS

    Hi all, I'm hoping to get some advice on how to run ANOVAs in SPSS for a design that includes a hanging control group. I'm interested in how...

    Started by tantsevat‎, 04-13-2015 01:45 PM
    3 x 3 + 1, anova, hanging control, spss
    • Replies: 2
    • Views: 984
    11-30-2016, 10:53 AM Go to last post
  29. 2x2x3 Anova, what will it tell me?

    Hi - I would like to compare the means of a DV (emotional intelligence) between three different variables, those being; 1) Gender (are the...

    Started by TruroJP‎, 11-28-2016 12:00 PM
    2x2 anova, anova, compare 2 means, statistical analysis
    • Replies: 2
    • Views: 266
    11-29-2016, 02:58 PM Go to last post
  30. Which analysis to choose? Urgent

    Hi, any help is greatly appreciated. I have data from the same children at ages 4, 7 and 11 for a variable (self-regulation) created from a...

    Started by TruroJP‎, 11-27-2016 05:31 PM
    analysis help, anova, compare 2 means, longitudinal analysis, stata 14
    • Replies: 5
    • Views: 363
    11-27-2016, 09:44 PM Go to last post
  31. effect size calculations for longitudinal mixed effects models

    I have been working with a financial database and recently got comments from a reviewer on my manuscript. The comments stemmed from how I calculated...

    Started by the42up‎, 11-25-2016 01:07 PM
    • Replies: 0
    • Views: 272
    11-25-2016, 01:07 PM Go to last post
  32. How to analyze repeated measures game data with changing difficulty levels?

    Participants: 19 children participated in the study. Children were grouped in groups G1 (N=8) and group G2 (N=11) based on their behaviors. A...

    Started by skirshna‎, 11-23-2016 07:23 PM
    different outcomes, hierarchical, mixed model, repeated ancova, repeated measures design
    • Replies: 2
    • Views: 335
    11-23-2016, 10:33 PM Go to last post
  33. Repeated measures when pre/post group is not independent or dependent

    Hello, I am running a pre-post study using several different instruments (e.g. 1-5 Likert scale instruments which produce a final score). It is...

    Started by lindsayh1‎, 11-22-2016 11:28 AM
    repeated measure, t-test two-sample
    • Replies: 2
    • Views: 287
    11-23-2016, 08:48 AM Go to last post
  34. Limits for missing values in the multiple imputation method

    I have an understanding question and I need help. I have a record with many missing values. I now wanted to use the multipile Imputation method to...

    Started by Syntax6‎, 11-17-2016 10:49 AM
    missing values, multiple imputation, psycology
    • Replies: 6
    • Views: 514
    11-19-2016, 07:22 AM Go to last post
  35. IV = 2 levels, DV = rank list from 1-8. Not sure how to explore variability between

    Greetings, Iím new to this forum and excited about enhancing my stats skills. Iím interested in exploring if there is a difference between two...

    Started by Luxor‎, 11-14-2016 09:38 PM
    • Replies: 0
    • Views: 274
    11-14-2016, 09:38 PM Go to last post
  36. Mixed-effects modelling of response data (multiple stimuli&subjects) in Matlab

    I have preference ratings (integers from 1-to-7) for k=80 stimuli, obtained from N=30 subjects. I want to use a mixed-effects model to test how well...

    Started by wildetudor‎, 11-08-2016 06:24 PM
    • Replies: 3
    • Views: 395
    11-14-2016, 01:05 PM Go to last post
  37. ?? 2 way ANOVA with both Between and a 2 way ANOVA with one between and one within ??

    Hello all, Can someone please explain how this works, as my text book just BRIEFLY touched on it. Lets say I want to run two studies. ...

    Started by allie_moore‎, 11-10-2016 04:57 PM
    • Replies: 2
    • Views: 342
    11-12-2016, 02:32 PM Go to last post
  38. Number of responses above a threshold after considering survey error

    I am interested in how many people in my survey of people earn between $50,000 and $54,999. I construct a paper survey which asks for income in...

    Started by jakeharry‎, 11-10-2016 12:30 PM
    income, survey, threshold, uncertainty
    • Replies: 3
    • Views: 341
    11-11-2016, 08:47 AM Go to last post
  39. Repeated Measures with 2 categorical variables and one continuous variable

    Hello TalkStats members, Ok I have searched the web and this site and I feel like I am still lost on my problem. I have six items where...

    Started by tqh‎, 11-07-2016 04:28 PM
    • Replies: 0
    • Views: 277
    11-07-2016, 04:28 PM Go to last post
  40. Can someone show me a 2x3 design, with AB interaction & main effect of A and B?

    Can someone show me a 2(A)x3(B) design, with AB interaction & main effect of A and B? In terms of a graph and an explanation of the graph ? My...

    Started by allie_moore‎, 11-03-2016 12:47 AM
    • Replies: 2
    • Views: 444
    11-06-2016, 03:13 AM Go to last post
  41. Prediction from predicted/residual values compare to standard error of the estimate

    Hello. I have to indicate how good prediction is, by looking at the actual, predicted, and residual values, compare to the standard error of the...

    Started by yumi‎, 11-04-2016 12:32 AM
    • Replies: 1
    • Views: 305
    11-05-2016, 06:53 AM Go to last post
  42. Factor analysis

    Dear all, I have a question concerning a factor analysis run in Stata (principal factor, no rotation), based on 12 variables - my experience with...

    Started by dnh‎, 11-01-2016 07:10 AM
    • Replies: 0
    • Views: 329
    11-01-2016, 07:10 AM Go to last post
  43. Repeated ANOVA using comparable starting values?

    Hello, I have a weird problem that I've never encountered before. I'm hoping someone else might provide their insight. I am conducted a study...

    Started by PillBaxton‎, 10-25-2016 11:55 AM
    repe
    • Replies: 1
    • Views: 382
    10-27-2016, 03:48 AM Go to last post
  44. Need help: Running a One-way FIXED effects Between Subject, ANOVA in SPSS.

    I am having to run a One-way FIXED effects Between Subject, ANOVA in SPSS, and I am STUCK! :( Anyone care to help? I will explain the best I can...

    Started by allie_moore‎, 10-25-2016 08:36 PM
    • Replies: 1
    • Views: 321
    10-26-2016, 07:55 AM Go to last post
  45. Structural Equiation Modeling - Likert variable and fit indices

    Hello everybody! Thank you in advance for reading, and for trying to help! To put it briefly.. I am working with Structural Equiation Modeling...

    Started by SFArtamendi‎, 10-24-2016 11:13 AM
    likert, rmsea, sem
    • Replies: 1
    • Views: 295
    10-24-2016, 03:07 PM Go to last post
  46. HELP with data collection methods and data analysis in quantitative research

    I am doing a research proposal on the effect of a drug on haemorrhage growth in traumatic brain injury. what level of data measurement will i use to...

    Started by murrayk‎, 10-21-2016 09:59 PM
    • Replies: 1
    • Views: 320
    10-22-2016, 01:49 AM Go to last post
  47. Unhappy Quick one please: Difference between 1-way and 2-way ANOVA - Example provided

    Hello, I apologize in advance if this is too simple for these forums, but I am just wanted to be very sure. Example: A study that looks at 2...

    Started by Sagan_24‎, 09-28-2016 12:59 AM
    factorial anova, one-way anova
    • Replies: 7
    • Views: 498
    10-21-2016, 08:06 AM Go to last post
  48. Understanding correlations in order to test speed-accuracy trade-off in experiments

    I understand that in experiments where the measures of interest are speed (reaction time) and accuracy, for an effect to be valid one needs to make...

    Started by Poppy1‎, 10-18-2016 05:33 PM
    accuracy, correlation, reaction time, sat, speed-accuracy trade-off
    • Replies: 3
    • Views: 434
    10-20-2016, 06:15 PM Go to last post
  49. Regression for multiple scores obtained from multiple subjects

    Hello, I have preference ratings (1-to-7 scale) for k=80 stimuli, obtained from N=30 subjects. I would like to do a multiple regression for these...

    Started by wildetudor‎, 10-19-2016 08:08 PM
    matlab, multiple regression, regression, repeat measures
    • Replies: 0
    • Views: 382
    10-19-2016, 08:08 PM Go to last post
  50. Can someone give example of, 2-way randomized fixed factor Anova (between subjects)

    Hi all, can someone give a link, or even a description of a two-way randomized fixed factor design, in which all factors (2) are between subject...

    Started by allie_moore‎, 10-19-2016 02:27 PM
    • Replies: 0
    • Views: 244
    10-19-2016, 02:27 PM Go to last post
  51. ANOVA help

    Hi everyone, I desperately need help with this ANOVA stuff. I didn't get to do my 2nd year STATs subjects, and I have no idea how to interpret...

    Started by Dragonaire‎, 10-18-2016 07:55 PM
    • Replies: 0
    • Views: 274
    10-18-2016, 07:55 PM Go to last post
  52. ANOVA on simple proportional accuracy scores versus on d prime indexes

    To answer this, you would need to know what d prime is. Here is a link: http://www-psych.stanford.edu/~lera/psych115s/notes/signal/ The method I...

    Started by Poppy1‎, 10-18-2016 06:02 PM
    accuracy, anova, d prime, power, signal detection theory
    • Replies: 0
    • Views: 253
    10-18-2016, 06:02 PM Go to last post
  53. Lightbulb What statistical tests to use? - advice please

    Hi all I am working on a project looking at ADHD in a large sample of adolescents. I am looking to investigate whether there are any differences...

    Started by sallysolomon‎, 10-14-2016 12:21 PM
    independent sample, spss, t-test
    • Replies: 2
    • Views: 390
    10-17-2016, 12:38 PM Go to last post
  54. Within Subjects Repeated Measures - Overall correlation across subjects

    Iíll just start by giving a brief description of my study. Itís a memory study in which participants study an object and a cue stimulus together for...

    Started by TommyJimmy‎, 03-23-2011 09:59 AM
    • Replies: 4
    • Views: 5,528
    10-14-2016, 06:54 AM Go to last post
  55. Physiological statistics

    Hello, I am planning my study, and cannot find the answers in a textbook, please could I have some advice? I am looking at variations in muscle...

    Started by DanielWals‎, 10-13-2016 11:16 AM
    • Replies: 0
    • Views: 264
    10-13-2016, 11:16 AM Go to last post
  56. Incredibility Index

    Any anyone worked with the incredibility index before (Schimmack, 2012)? I've been trying to figure out exactly how it is calculated. Unfortunately,...

    Started by chigou‎, 10-11-2016 02:19 AM
    • Replies: 9
    • Views: 589
    10-12-2016, 11:37 AM Go to last post
  57. no interaction but moderated mediation?

    Hello, my ANOVA analysis shows me that I have no interaction between my moderator and IV. Is it still possible to test for a moderated...

    Started by yologer‎, 10-09-2016 06:22 AM
    • Replies: 3
    • Views: 396
    10-09-2016, 05:04 PM Go to last post
  58. Between and within group differences

    I am doing a research project on antisocial youth behavior and SES inequality. I am supposed to run two level logistic regression in STATA. There is...

    Started by Nour13‎, 09-15-2016 07:41 AM
    logistic regression, multi level, stata
    • Replies: 2
    • Views: 437
    10-05-2016, 04:55 PM Go to last post
  59. Creating a summative scale for items with different number of response categories?

    Dear TalkStats users, Let me first give you my main goal: I would like to create a summative scale that I could compare with other scales (each of...

    Started by menteith‎, 10-03-2016 10:31 AM
    likert scale, likert-type scale
    • Replies: 0
    • Views: 324
    10-03-2016, 10:31 AM Go to last post
  60. What does only one significant standardised residual mean in 2x3 Chi Squared tables?

    Hi everyone. I'm writing up a report for my advisor, which compares count data for three conditions, across two different groups. I therefore have a...

    Started by DrJay‎, 09-29-2016 07:45 AM
    categorical data, chi squared, count data, residuals, standardized residuals
    • Replies: 2
    • Views: 422
    09-29-2016, 04:12 PM Go to last post

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